Mapping of new recessive cataract gene (lr2) in the mouse

A new strain of mice with cataracts was developed in BALB/cHeA and STS/A recombinant inbred strain, CXS4 (D). In this study the mapping of spontaneous autosomal recessive cataract mutation is described. This mutation was characterized by ruptures of the lens nucleus, vitreous chamber through the posterior capsule, and the vacuolization of the lens. For the linkage analysis, we produced two kinds of backcross progenies, (BALB/cHeA x D)F1 and (STS/A x D)F1 females crossed to D male mice. The gene (lr2, lens rupture2) was mapped to the central part of Chromosome(Chr) 14, 0.7 +/- 0.7 cM from the micosatellite marker D14Mit28.